Year	current US$
1976	19999.9995529652
1997	50000.0007450581
1998	70000.0002980232
1999	59999.9986588955
2001	330000.013113022
2002	250000
2003	90000.0035762787
2004	709999.978542328
2005	79999.9982118607
2006	270000.010728836
2007	209999.993443489
2013	170000.00178813902